/Engine/Source/Runtime/Engine/Classes/Engine/HLODProxy.h
Extract components that we would use for LOD generation. Used to generate keys for LOD actors.
static void ExtractComponents ( const [ALODActor](API\Runtime\Engine\Engine\ALODActor) * LODActor, [TArray](API\Runtime\Core\Containers\TArray)< [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * > & InOutComponents )